CVE-2026-87022

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{"affected_release": [{"advisory": "RHSA-2026:68257", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "tomcat10-main-10.1.60-0.1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68258", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "tomcat11-main-11.0.26-0.1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-09-16T00:00:00Z"}], "bugzilla": {"description": "tomcat: Apache Tomcat: WebSocket message smuggling via improper length handling", "id": "2539373", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2539373"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-130", "details": ["Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used.\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.\nThe following versions were EOS at the time the CVE was created but are known to be affected:\u00a0from 8.5.0 through 8.5.100, from 7.0.56 through 7.0.109.\u00a0Other unsupported versions may also be affected.\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.1.22, which fix the issue.", "A flaw was found in Apache Tomcat. This vulnerability, related to improper handling of length parameters, allows for WebSocket message smuggling when the 'per-message-deflate' extension is in use. A remote attacker could exploit this to bypass security controls or inject malicious data into WebSocket communications, potentially leading to unauthorized actions or information disclosure."], "name": "CVE-2026-87022", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Under investigation", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Under investigation", "package_name": "tomcat9", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "tomcat6", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "pki-deps:10.6/pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Under investigation", "package_name": "pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Under investigation", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "hi/tomcat", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5", "fix_state": "Under investigation", "package_name": "jws5-tomcat", "product_name": "Red Hat JBoss Web Server 5"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:6", "fix_state": "Under investigation", "package_name": "jws6-tomcat", "product_name": "Red Hat JBoss Web Server 6"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:7", "fix_state": "Under investigation", "package_name": "jws7-tomcat", "product_name": "Red Hat JBoss Web Server 7"}], "public_date": "2026-09-23T11:32:55Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-87022\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-87022\nhttps://lists.apache.org/thread/ypvlkjqsq0480fnk9jm6h9qllddwlw4w"], "threat_severity": "Low"}

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